<report>A good story with perfect BGM. If you just started to play this game, do not be afraid if those horror BGMs or CGs scared you. All truth will be revealed in the true end route. The game contains several plot locks and is intended to let you read all stories with its inner order. You don't have to fell shy, cuz use walkthrogh without spoilers will not influence your gameplay. Walkthrough by Seiya no Heya link.

P.S.The true end is also the happy end.

<report>It's so slow, and despite being just ~15 hours feels very stretched. Even 2 hours in on this anticipated ritual just nothing happens, protagonist just sits and describes the room. The guy has a serious concussion btw, 30 minutes talking to the doll he couldn't connect 2 dots that this is the doll, and not Rei, while she almost directly said it and had the opposite character/behavior.
I dropped it after 4 hours until which nothing happend and there were nothing that could catch any interest - no mystery (with such a bright protag it's a torture), no signs of interesting personas, no atmosphere. But I mined a few cards for Anki, it works perfectly, and it has text which I guess you can read.